Big Pit National Coal Museum is an industrial heritage museum in Blaenavon, Torfaen, Wales. A working coal mine from 1880 to 1980, it was opened to the public in 1983 under the auspices of the National Museum of Wales.

It is a song first recorded by folk singer Pete Seeger, which consists of Seeger's own music and words written by Welsh poet Idris Davies.

The work was inspired by a local coal mining disaster and by the failure of the 1926 General Strike. In addition to Rhymney, the poem also refers to the bells of a number of other places in South Wales, including Merthyr, Rhondda, Blaina, Caerphilly, Neath, Brecon, Swansea, Newport, Cardiff, and the Wye Valley.

Arguably the most famous rendition of the song is the version recorded by the American folk rock band the Byrds. Their 1965 recording of "The Bells of Rhymney" was released as part of the band's debut album, Mr. Tambourine Man.

"The Bells of Rhymney" was also covered by Cher, and Bob Dylan recorded the song in 1967.

Amongst other artists who have recorded the song are Judy Collins, the Ian Campbell Folk Group, Murray Head, John Denver, The Oysterband and Ralph McTell.”